emitters, on line emitter, off line emitter, stainless steel emitter, ES MS, electrospray, nano electrospray, mass spectrometry

Online Emitters

For many applications, stainless steel emitters exhibit characteristics that are superior to those obtained with fused silica emitters:
  • Stable spray maintained over a wide flow rate range - from less than 50 nL/min to more than 1500 nL/min - and easily re-initiated after intermissions
  • Exceptional durability - reliable performance in excess of 1000 hours

  • Low risk of blockage - the tip is not tapered inside
Thermo Scientific offers a wide selection of high quality, electropolished, nanobore stainless steel emitters for coupling online to a nanoflow LC system or a syringe pump when using LC-MS.

Available in different lengths, these emitters are supplied pre- inserted in microsleeves of various O.D to facilitate installation on any ion source.

Selection Guide
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Description Part Number
Precision tweezers and ceramic glass cutter.
ES250
Stainless Steel Emitters, length 105 mm, with sleeve O.D. 0.025
ES508
Stainless Steel Emitters, length 105 mm, with sleeve O.D. 1/16
ES568
Stainless Steel Emitters, length 105 mm, with sleeve O.D. 1/32
ES548
Stainless Steel Emitters, length 105 mm, with sleeve O.D. 360µm
ES528
Stainless Steel Emitters, length 30 mm, with sleeve O.D. 0.025
ES501
Stainless Steel Emitters, length 30 mm, with sleeve O.D. 1/16
ES561
Stainless Steel Emitters, length 30 mm, with sleeve O.D. 1/32
ES541
Stainless Steel Emitters, length 30 mm, with sleeve O.D. 360µm
ES521
Stainless Steel Emitters, length 40 mm, with sleeve O.D. 0.025.
ES502
Stainless Steel Emitters, length 40 mm, with sleeve O.D. 1/16
ES562
Stainless Steel Emitters, length 40 mm, with sleeve O.D. 1/32
ES542
Stainless Steel Emitters, length 40 mm, with sleeve O.D. 360µm
ES522
Stainless Steel Emitters, length 50 mm, with sleeve O.D. 0.025
ES503
Stainless Steel Emitters, length 50 mm, with sleeve O.D. 1/16
ES563
Stainless Steel Emitters, length 50 mm, with sleeve O.D. 1/32
ES543
Stainless Steel Emitters, length 50 mm, with sleeve O.D. 360µm.
ES523
Product descriptions and specifications are subject to change without notice.

Offline Emitters

  • Stable spray - from 10 nL/min to 40 nL/min
  • Long length emitters to achieve slower flow rates
  • Medium length emitters for samples with higher viscosity and easier "start up"

  • Double coating of Au/Pd for use with original Micromass sources and whenever a stronger coating is useful
Thermo Scientific offers a range of disposable, metal-coated borosilicate capillaries for offline nano ES mass spectrometry.
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Description Part Number
Borosilicate Emitters with extra coating, Long
ES388
Borosilicate Emitters with extra coating, Medium
ES387
Borosilicate Emitters, 50 Medium and 50 Long.
ES383
Borosilicate Emitters, Long
ES381
Borosilicate Emitters, Medium
ES380
Precision tweezers and ceramic glass cutter.
ES250
Product descriptions and specifications are subject to change without notice.